cholesterol is a
steroid, a lipid, and an alcohol, found in the cell membranes of all
body tissues, and transported in the blood plasma of all animals.
Most cholesterol is not dietary in origin, it is synthesized
internally. Cholesterol is present in higher concentrations in tissues
which either produce more or have more densely-packed membranes, for
example, the liver, spinal cord, brain and atheroma. Cholesterol plays
a central role in many biochemical processes, but is best known for the
association of cardiovascular disease with various lipoproteintransport
patterns in the blood.
: From Wikipedia, the free encyclopedia.